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US5221873A
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Pressure transducer with quartz crystal of singly rotated cut for increased pressure and temperature operating range
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US5165479A
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Method for stimulating subterranean formations
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US5125455A
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Primary cementing
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US5127473A
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Repair of microannuli and cement sheath
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US5123487A
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Repairing leaks in casings
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US4880468A
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Waste solidification composition and methods
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US4889183A
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Method and apparatus for retaining shaped charges
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US4842073A
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Fluid additive and method for treatment of subterranean formations
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US4809783A
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Method of dissolving organic filter cake
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US4804044A
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Perforating gun firing tool and method of operation
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US4700780A
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Method of reducing fluid loss in cement compositions which may contain substantial salt concentrations
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US4771801A
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Protective cover assembly with reverse buckling disc
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US4502537A
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Annular sample chamber, full bore, APR® sampler
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US4393939A
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Clay stabilization during oil and gas well cementing operations
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US4299397A
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Inflatable packer assembly with control valve
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US4319638A
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Apparatus for cementing from a floating vessel
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US4334582A
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Method of cementing from a floating vessel
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US4296808A
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Isolation packer extension
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US4313495A
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Downhole pump with pressure limiter
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US4355685A
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Ball operated J-slot
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